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Introduction to Group Companies

Tosei Engineering Corp.

Company Profile

Tosei Engineering Corp.
  • Date of establishment:April 15, 1969
  • Head office:4-6 Higashinakanuki-machi, Tsuchiura-shi, Ibaraki
  • Representative:Katsushi Goto
  • Sales:13,997 million yen (FY2021)
  • Employees:569 (as of March 31, 2022)
    Note: Excludes our employees stationed to other companies; includes employees of other companies stationed at our companies
  • Bases
    4 plants and 13 service bases in Japan, 3 plants and 10 bases overseas

Business Overview

Tosei Engineering, a wholly owned consolidated subsidiary of Tokyo Seimitsu, services Tokyo Seimitsu’s measurement products, develops and manufactures automatic and labor-saving measurement equipment, and develops and manufactures semiconductor manufacturing equipment. The company has three main businesses, the automatic measurement, semiconductor manufacturing equipment, and service businesses. In the automatic measurement business, it provides automatic measuring instruments for automobile and home appliance production lines. In the semiconductor manufacturing equipment business, the company develops and manufactures wafer chamfering machines and other equipment. In the service business, the company calibrates, repairs, and maintains measuring instruments, and has established a network of industry-leading service bases.

Since its founding, Tosei Engineering has helped to address customers’ issues by providing various precision instruments and servicing measuring instruments based on the idea that “ No measurement, no manufacturing.” To deliver safe and reliable products to all its customers, the company works to realize a sustainable society that respects people and the global environment, including by reducing its impact on the environment. In May 2020, Tosei Engineering established an integrated management system and obtained certification under both ISO 9001 and ISO 14001. The company contributes to the local community and meets the needs of its customers by balancing environmental conservation with product safety and high quality. Tosei Engineering also engages actively in companywide occupational health and safety activities aimed at maintaining a healthy and comfortable work environment and promoting a more sustainable workplace.

Tosei Systems Co., Ltd.

Company Profile

Tosei Systems Co., Ltd.
  • Date of establishment:October 1, 1985
  • Head office: 2968-2 Ishikawa-machi, Hachioji-shi, Tokyo (inside Tokyo Seimitsu Plant)
  • Representative:Koichi Kawamura
  • Sales:2,446 million yen (FY2021)
  • Employees:148 (As of March 31, 2022))
  • Bases: 2 bases in Japan, 0 bases overseas

Business Overview

Tosei Systems is a Tokyo Seimitsu Group company that supports Tokyo Seimitsu’s product development in the software field. Tosei Systems contributes to high-quality and safe manufacturing by developing embedded software that controls equipment and Windows applications incidental to equipment, mainly for Tokyo Seimitsu’s semiconductor manufacturing equipment and measuring equipment, as well as the products of affiliated companies. The company is also involved in the development and operational support of core systems (ERP) and is responsible for the overall software operations of the Tokyo Seimitsu Group, helping to ensure its security by contributing to the maintenance and management of the system.

Tosei Systems is stepping up its public relations targeting the recruitment of female students in order to create a work environment in which all employees can play an active role and to promote the advancement of women in the company. Tosei Systems focuses on training new graduates, starting with a mentor system to follow up on job offers. This is followed by three months of training, including outside training, after new recruits join the company.

The company also conducts management training on the themes of “ accurately understanding harassment” and “ practicing prevention, early detection, and early response to mental health issues” in an effort to foster an organizational culture that is easy for all employees to work in.

Tosei Box Corp.

Company Profile

Tosei Box Corp.
  • Date of establishment:September 1, 2001
  • Head office:1-22-17 Akebono-cho, Tachikawa-shi, Tokyo
  • Representative:Hideaki Takano
  • Sales:1,203 million yen (FY2021)
  • Employees:43 (As of March 31, 2022)
  • Bases:4 bases in Japan, 0 bases overseas

Business Overview

Tosei Box offers richer living environments by providing delivery lockers that can be used with peace of mind, under the motto “Safety, Comfort and Relief.” The company believes its business contributes greatly to the environment and society by helping logistics-related businesses reduce re-deliveries and CO₂ emissions as well as to decrease the burdens on delivery staff. As one measure to prevent the spread of COVID-19, such social tools are growing increasingly important as part of “new normal” lifestyles that seek to prevent in-person contact.

The company is also working to promote products equipped with state-of-the-art personal authentication technologies such as contactless IC cards, facial recognition, and vein recognition, as well as automatic door-opening products.

Tosei Box will continue striving to supply better products and services that contribute to the society of the future, while at the same time engaging actively in sustainability activities. On the employee education front, the company strives to raise awareness by communicating the social significance of its business. It uses e-learning to ensure that all employees participate in education on such topics as the Code of Conduct, information security, and harassment. Through BCP activities, Tosei Box helps customers restore equipment and resume business operations in the event of disaster.

Accretech Powertro System Co., Ltd.

Company Profile

Accretech Powertro System Co., Ltd.
  • Date of establishment:October 1, 1999
  • Head office:50 Osaku, Matsukawa, Furudono-machi, Ishikawa-gun, Fukushima
  • Representative:Masahiro Tomoeda
  • Sales:1,105 million yen (FY2021)
  • Employees:71 (As of March 31, 2022)
  • Bases: 5 bases in Japan, 0 bases overseas

Business Overview

In recent years, climate change brought about by greenhouse gas emissions has become increasingly apparent, and natural disasters have been occurring frequently around the world. In particular, internal combustion engine automobiles and coal-fired thermal power generation are cited as generating large amounts of CO₂, and it is said that curbing these emissions is key to saving the global environment. It is important, therefore, that electric vehicles that do not generate CO₂ spread quickly, along with systems that store electricity from solar power generation. Lithium-ion and other rechargeable batteries are at the core of such systems. Accretech Powertro System’s main business is the development and sales of charge/discharge testing systems (used for testing and evaluating rechargeable batteries), as well as the provision of battery evaluation contract services using its own equipment. Charge/ discharge testing systems are used to evaluate battery characteristics, performance, and safety by performing charge/ discharge tests under simulated real-world conditions (for example, for in-vehicle use under various driving conditions). Going forward, the company expects increasing demand for rechargeable batteries that are reasonably priced and that offer high performance, long life, and good safety. Accretech Powertro System believes its role lies in the evolution and development of such batteries, and the company intends to help maintain a sustainable global environment through its business.